Too expensive.
I used to live in Madison and now I live in New York and this is expensive even by the New York standards. Everything is split into Snacks, Small Plates and Large Plates. Sharing is encouraged. My understanding is that Snacks and Small Plates are somewhat similar size and we were told that Large Plates are the size of an entrée. Well of a really small entrée. All entrees were $22+ and there is no way the amount of food could satisfy a grown person. I am a small woman and I could eat 3 of such entrees easily. For examples, the scallop large plate had 3 scallops on it.
If you try to hit one of best value-priced items order the rabbit rillettes. Be prepared that it's very greasy (as all rillettes go) and order extra bread. That was a pretty filling Small Plate/Snack for $12.
I thought that wine and beer was priced reasonably, $4-5 for beer and $7-8 for a glass of wine on average. For dessert everyone seems to be ordering the bread pudding for $8.
Some tables are communal if you don't mind that. It was warm outside even at tables next to the windows. Big plus for that for a Madison restaurant.
Be prepared for the food to be very greasy. If not animal fat then it will be dripping with some oil. It's tasty but greasy so if you try to eat healthy you will have a hard time but that's not why we go out to eat, right!
At 8 pm on Friday night the place was still packed so the business so far is brisk. Pigs are a casual bunch even in coats so don't worry about dressing up. There wasn't one dressed up person when we were there. So enjoy, it's quite a gem on Willy street and I dare you to order tripe.